BMW TSB #B651316
2015 BMW M4
Affected Component: EQUIPMENT
- Summary
- COMPONENT PROTECTION ACTIVE. HEAD UNITS CANNOT BE SWAPPED BETWEEN VEHICLES FOR TESTING.: If either the head unit (NBT-EVO or ENTRY-NAV-EVO) or the Body Domain Controller (BDC) are swapped into a different vehicle they will cause the head unit to enter a locked mode once it recognizes a different VIN.